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Emissões otoacústicas transientes como método complemantar no topodiagnóstico das perdas auditivas neurossensoriais / Passing otoacustic emissions as a complementar method in the topodiagnosis of the neurosensories hearing loss
Franceschi, Cacineli Marion de; Tochetto, Tania; Lautenschlager, Larissa.
  • Franceschi, Cacineli Marion de; Universidade Federal de Santa Maria. Santa Maria. BR
  • Tochetto, Tania; Universidade Federal de Santa Maria. Curso de Fonoaudiologia. Santa Maria. BR
  • Lautenschlager, Larissa; Universidade Federal de Santa Maria. Santa Maria. BR
Arq. int. otorrinolaringol. (Impr.) ; 14(1)jan.-mar. 2010. tab
Article in Portuguese, English | LILACS | ID: lil-545305
RESUMO

Introdução:

Não faz parte da rotina clínica avaliar as emissões otoacústicas (EOAETs) em pacientes com perda auditiva neurossensorial. Entretanto obter-se-ia informações valiosas em relação ao topodiagnóstico.

Objetivo:

Identificar sinais de alteração retrococlear em indivíduos com diagnóstico de disacusia neurossensorial.

Método:

Estudo prospectivo, quantitativo, observacional e transversal. Foram analisados 34 prontuários de usuários do Serviço de Atendimento Fonoaudiológico. Foram incluídos no estudo indivíduos com perda auditiva neurossensorial de grau moderado a profundo. Realizou-se avaliação de Emissões Otoacústicas Transientes (EOAETs) em todos os indivíduos da amostra. Os que não apresentaram EOAETs tiveram a condição das orelhas média e externa avaliadas por meio de meatoscopia e timpanometria para eliminar orelhas com sinais de alteração condutiva.

Resultados:

Após aplicados os critérios de exclusão, restaram 13 indivíduos, totalizando 26 orelhas quatro com perda auditiva de grau moderado (15%), quatro com grau moderadamente severo (15%), duas com grau severo (8%), 15 com grau profundo (58%) e uma com anacusia (4%). As curvas timpanométricas encontradas foram 22 (85%) Tipo A e quatro (15%) Tipo C. Verificou-se presença de EOAETs em apenas duas orelhas (8%) de um mesmo sujeito.

Conclusão:

Verificou-se predomínio de ausência de EOAETs em sujeitos com perda auditiva neurossensorial de grau moderado a profundo. Em um único caso as EOAETs foram registradas, o que sugere alteração retrococlear. Levantando a suspeita de alterações retrococleares.
ABSTRACT

Introduction:

To evaluate the otoacustic emissions (EOAETs) in patients with neurosensory hearing loss do not belong to the clinical routine. However it would obtain valuables information concerning the topodiagnosis.

Objective:

To identify signs of retro cochlear alteration in individuals with neurosensory dysacusis diagnosis.

Method:

A transversal, observational, quantitative and, prospective study. Were analyzed 34 patients' records of users of the Speech Therapy Attendance Service. In the study were included individuals with neurosensory hearing loss of moderate to deep degree. An evaluation of Passing Otoacustic Emissions (EOAETs) was performed in all the individuals of the sample. Those that do not presented EOAETs had the external and middle ear' condition evaluates through meatoscopy and tympanometry to eliminate ears with sings of conductive alteration.

Results:

Before that the exclusion criteria were applied, they have remained 13 individuals, totalizing 26 ears four with hearing loss of moderate degree (15%), four with moderately severe degree (15%), two with severe degree (8%), 15 with deep degree (58%) and, one with deafness (4%). The tympanometric curves found were 22 (85%) Type A and, four (15%) Type C. It was verified the presence of EOAETs in only two ears (8%) of a same individual.

Conclusion:

It was verified the predominance of the EOAETs absence in individuals with neurosensory hearing loss of moderate to deep degree. In one case the EOAETs were registered, that suggest retrocochlear alteration. Raising suspicion of retrocochlear alterations.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Cochlear Diseases / Cochlear Nerve / Diagnosis, Differential / Hearing Loss, Sensorineural Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Child / Child, preschool / Humans / Infant Language: English / Portuguese Journal: Arq. int. otorrinolaringol. (Impr.) Journal subject: Otolaryngology Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Santa Maria/BR

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Full text: Available Index: LILACS (Americas) Main subject: Cochlear Diseases / Cochlear Nerve / Diagnosis, Differential / Hearing Loss, Sensorineural Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Child / Child, preschool / Humans / Infant Language: English / Portuguese Journal: Arq. int. otorrinolaringol. (Impr.) Journal subject: Otolaryngology Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de Santa Maria/BR